An authentication, authorization, and accounting module of a first distributed mobile architecture system is disclosed and includes a destination preference register. The destination preference register includes a preferred call path for calls to be routed outside of a distributed mobile architecture network that is accessible to the first distributed mobile architecture system. The preferred call path can be selected from a group comprising a voice over Internet protocol (VoIP) call path, a mobile switching center (MSC) call path, and an integrated services digital network (ISDN) call path. Further, calls that are placed outside of the distributed mobile architecture network from the first distributed mobile architecture system can be established via the preferred call path. Additionally, calls that are routed outside of the distributed mobile architecture network from a mobile subscriber in communication with the first distributed mobile architecture system can be established via the preferred call path.